Rethinking the world

by Jeffrey Legro

"Stunning shifts in the worldviews of states mark the modern history of international affairs: how do societies think about - and rethink - international order and security? Japan's "opening," German conquest, American internationalism, Maoist independence, and Gorbachev's "new thinking" molded international conflict and cooperation in their eras. How do we explain such momentous changes in foreign policy - and in other cases their equally surprising absence?" "The nature of strategic ideas, Jeffrey W. Legro argues, played a critical and overlooked role in these transformations. Big changes in foreign policies are rare because it is difficult for individuals to overcome the inertia of entrenched national mentalities. Doing so depends on a particular nexus of policy expectations, national experience, and ready replacement ideas. In a sweeping comparative history, Legro explores the sources of strategy in the United States and Germany before and after the world wars, in Tokugawa Japan, a